Self-grinding valve



* Aug. 17, 1926.

.,1. F. KELLY SELF GRINDING VALVE Filed June 175, 1924 am m J" l l o/zro ,ZZ/5@ v C@ ingaan ria raar JOHN'F.' KEIILY, OF`MUS`KEGON, MICHIGAN, ASSIGNOBL TGKE'Y VAIVE COMPANYOF MUSKEGON, MICHIGAN, A CORPORATIONQOFTMCHIGAN.

SELF-GRINDING VALVE;

This invention pertains to valves, andparticiilaiily. to the-self-grindingiype in which a valve'diskis adapt'edto ybe rotated against and incontact witlizitsfseat!` duringtlieopeir ing andlclosingv movements of the .valve for the-purpose `of grindingt'hezfaeeof the disk against the seat.- tofinsure a tight closing of the valve;

One of the primaryY purposes of this invention isr the' provision` off adj ustable: means whereby the/extent of grindingfimovement ot the disk against its seat .may beadjusted and regulated to adapt thevalve for various conditionsfuiiderwhich it may be used. In some installations aiquarter turiio't the disk in contactwitln` the' seat` is suliicient, and further grinding.- inoveinentisy not only unfnecessary but` results: in unnecessary wear uponfthel disk and. seat. In other installations, a halfzor eveinaf f'ullfturnlot the disk against-.its seat islesirable, andimy present invention aims to provide for.- adjustment and regulation oLtlie'gr-inding movement to adapt the/ valvev for various `Condit-ions.

Another. purpose of theI invention'. is to provide a valve: with a removable seat and aA removable disk,4 either on both: of which may` be removedand renewed' when Voccasion requires.V

A: further object is to dispose therworlingy parts ot thel valve outside'the valve bodyso that they'arenotsubjected tofthe'iactioii of thefluid:flowingl throught-he valve, and to provide packing ar-ound th'evalve stem` which may bet-ightened and adjusted' when occasion requineswitliout in. anyl way dismantlingf; the valve structure, this desidera tum being accomplished by the-.employment Fig. 1 is a vertical sectionalvview through a valve embodying my invention;

Fig; 2' is a similar view taken Aat right angles to Fig. 1;

Fig. 3 is a sectional view on the line 3 3 of Fig. 1;

Figs. 4 and 5 are plan and elevational views, respectively, of the sliding sleeve;

Serial No. 719,729.

Figs'. 6- andy 7 are plan and,y elevationalviews, respectively,l oil-.the Vreinovablervalve,`

disk; Fig; 8 is-a plan viewA oi thelower adjustiiigring'; and

Fig., Sis a siinilaiiview of'the uppery ad- Theboniiet 15 is threaded into the top oit the body and.y provided with a depression toy accommodate'the-packing materialil, whichl surroundsl the valve'v stem- 17` and is conipressed to provide a? leak proof joint` by means-of thepacking. nut 18 threadedV into the pocket. A; sleeve 19 isprefer-ably interf` posed bet-Ween the'nut and the valvel stem.l The nut? is providedat itsupper end` with a sei'iies i of radially disposed recesses 21 adaptedtoreceive the endot atool'by. means ot-` which. the nutmaybef adjusted, andaccess tothe'nut for adjustment purposes is had throughA the openings 22, formed inthe walls of the-bonnet 15.

The lower end oic the valve steinl''is i'lattened at two sides, as indicatedy at 23, and providedwith afil'ange 24 belowthe flattened portions. The' valve disk"` 25 is provided with a transverse undercutfgroove. 26, the inwardly projecting edges or flanges 27 ot which over-liethe flange 240i the stem and engragethe iiattened portions'23rof the steml toiinsure rotat-iono'f the diskt with'the stem. To retain'tliey disk against lateral displacement from the'V stein,v the. lower end.- of the' bonnet 115 is provided with. fi-depending` guide or cage 28, disposed around tliedisk4 so; as to prevent lateral displacement ofthe disk relatively to thefstem and:` maintain the disk and; stemfiniA axial alignment.v When. the disk`A is tio-bereniove'd or renewed, th(` bonnet is detached from the body, whereupon the stem may be projected downwardly7 suiiiciently to clear the disk from the lower' edge of the cage, whereupon the disk may be slid laterally off from the stem.

The stem 17 is screw threaded intermediate its ends, as indicated at 29, and a tapped sleeve 3l threaded onto the stem is provided with wings 32 disposed in recesses 33 formed in the walls of the bonnet, by which the sleeve is held against rotation. The sleeve, however, is slidable longitudinally in the bonnet, for a purpose which will be later explained.

The sleeve is normally held in depressed position, shown in Fig. 1, by a coiled eX- pansion spring 34 interposed between the sleeve and the top of a cap 35, threaded into the tapped upper end of the bonnet. The tension of this spring may be regulated b y adjusting the position of the cap, and when the valve disk is forced against its seat by manipulation of the hand-wheel 36, the sleeve will be raised, by further rotation of the stem, against the force of the spring 34, thereby yieldingly holding the disk against its seat while the same is being rotated thereon to perform the desired grinding action.

For the purpose of limiting the upward travel of the sleeve, an adjustable abutment aga-inst which the upper end of the sleeve abuts, in the form of a ring 37, is threaded into the bonnet. By adjusting this ring upwardly or downwardly in the bonnet, the travel of the sleeve, and thereby the extent of rotation of the valve disk before it becomes securely locked against its seat, may be regulated. To insure against accidental displacement of the ring 37, a second ring 38 is threaded into the bonnet above the ring 37, and when clamped against said ring serves the function of a lock nut to lock the ring in adjusted position. In order to provide for adjustment of the rings, the lower ring 37 is equipped with inwardly projecting bosses 39, and the upper face of the ring 3S is provided with depressions 4l, both of which are adapted for engagement by suitably shaped wrenches, by which the adjustment of the rings may be effected. By adjustment of the cap 35, the tension of the spring 34 may be regulated to any desired pressure, and when the disk is closed against its seat, this spring will yield upon continued rotation of the valve stem, thereby permitting the disk to be ground against its seat until the sleeve is elevated suiiiciently to engage the abutment ring, whereupon the disk is securely locked against the seat. The extent of grindingmovement of the disk against its seat may be adjusted and regulated by adjusting the position of the abutment ring. The packing around the valve stem may be tightened or loosened by adjusting the packing nut through the open sided bonnet. Furthermore, both the valve disk and the seat may be readily removed and repaired or renewed when occasion requires.

The structural details illustrated and described inay obviously be varied within wide limits without departing from the essence of the invention, as defined in the following claims.

I claim:

l. A valve comprising a seat, a rotatable disk, means for yieldably holding said disk against its seat during rotative movement thereof to grind the disk against the seat, and adjustable means for regulating the extent of the grinding movement.

2. A self-grinding valve comprising a seat, a. valve disk, means for rotating said disk in engagement with the seat, and means whereby the extent of such rotative movement may ybe adjustably limited.

3. A self-grinding valve comprising a seat, a rotatable valve disk, a spring for yieldingly urging said disk against its seat during rotative movement thereof to grind the disk against said seat, a movable inember for locking said disk against said seat, and means adjustably disposed in the path of movement of said member whereby the grinding action between the disk and said seat may be regulated.

4. A self-grinding valve comprising a seat, a rotatable disk, a stem upon which said disk is carried, a sleeve threaded upon said stem, means for holding` said sleeve against rotation, a spring urging said sleeve toward said seat, and an adjustable abutment in the path of travel of said sleeve whereby the grinding action of the disk aga-inst said seat may be regulated.

5. In a valve, the combination of a seat, a disk, a stem carrying said disk, a sleeve threaded on said stem, a bonnet surrounding said sleeve, a spring disposed above said sleeve, means for regulating the tension on said spring, and adjustable means for regulating the travel of said sleeve.

6. In a valve, the combination of a body, an open bonnet attached thereto, a stem eX- tending through said bonnet into said body, a sleeve threaded onto said stem and held by said bonnet against rotation, a cap threaded into the upper end of said bonnet, a spring interposed between said cap and said sleeve, and an adjustable abutment ring threaded into said bonnet into the path of travel of said sleeve.

JOHN F. KELLY. 

